#include <stdio.h>

int main(void)
{
    int a = 1, b = 1;
    int a_post, pre_b;

    a_post = a++;
    pre_b = ++b;

    printf("a a_post b pre_b\n");
    printf("%1d %4d %3d %3d", a, a_post, b, pre_b);

    return 0;
}